Photoradioscope



Aug. 18, 1931. R. H. RANGER PHOTORADIOSGOPE 19 I; lNV NTOR PMH. RANGER/.'L jf 7, /J/MM AW ORNEY Original Filed Jan.

Patented Aug. 18, 1931 UNITED STATES PATENT OFFICE RICHARD ROWLANDRANGER, OI NEWARK, NEW JERSEY, ASSIGNOZR TO RADIO COR- PORATION 0FAKERIGA, A CORPORATION OF DELAWARE PHOTORADIOSCOPE Application filedJanuary 9, 1928, Serial No. 245,849. Renewed April 5, 1930.

My invention relates to the reproduction of pictures and the liketransmitted from a remote point by radio or wire, and particularly tothe method and ap aratus for displaying the pictures as pro uced.

An object of my invention is to provide an arrangement for displayingradio or wire pictures as they are produced and particularly adapted toenable an onlooker to continuously watch a picture received over radioor wire transmitting and receiving systems as it is being developed orreproduced.

Another object of my invention is to provide an arrangement useful foradvertising purposes for displaying pictures as produced in accordancewith radio or wire impulses actuating a reproducer for rebuilding thepicture or facsimile at a remote point from the transmitter.

Another object of my invention is to provide a photoradioscope in theform of a display rack for pictures in which the picture recordingsurface is advanced with respect to a recorder in accordance with therate of building up the picture.

Other objects of my invention are to produce in a manner hereinafter setforth a photoradioscope which is simple in its construction andarrangement, durable, compact, efficient, conveniently operated, readilyset up, and inexpensive to install, as well as other objects which willbe apparent from a reading of the specification when considered togetherwith the accompanying drawings which form a part of my specification.

My invention in one of its preferred forms is illustrated by theaccompanying drawings,

- wherein Fig. 1 is an assembly drawing of one embodiment of thephotoradioscope in accordfor-moving the recording surface with respectto the recording means. To now make reference to the accompanyingdrawings, the same comprises a picture reproducing machine and a displayrack which I have termed a photoradioscope attached thereto, although itis within the scope of the invention to arrange the display apparatusentirely separate from the reproducing machine. A paper of a suitablecharacter for recording the picture impulses as received is passedthrough the photoradioscopcand is periodically advanced with re spect toa recording means, so that an audience looking at the arrangement mayfollow the progress of building up the picture in its separate line forline passages, so as to finally form a finished picture.

For originall transmitting the pictures an arrangement 0 any knowndescription may be used, although I prefer to utilize arrangements ofthe general character disclosed by my copending application, SerialNumbers 695,175; 726,235; and 101,611, filed February 26th, 1924; July16th, 1924; and April 13th, 1926, respectively. Synchronizers of anydesired types may be used for coordinating the speeds of the movingelements at the transmitter and receiver. 7

The picture reproducing arrangement may, if desired, be of a similarnature to that which has been disclosed in my copending application,Serial Number 128,720, filed August 12th, 1926, in which a heatsensitive paper was mounted upon a drum or cylinder across which aheated air jet was passed, and in which the heat was periodicallydissipated by the action of a cold air jet governed in accordance withreceived signal impulses, which were proportional to the various colorintensities of the picture being transmitted.

In accordance with a preferred embodi- -ment of my invention, such ashas been illustrated for the purpose of showing a concrete example ofthe present machine, I have chosen to reciprocate acarriage 1, which maybe of the character disclosed in the above referred to copendingapplication, Serial No. 128,720, by means of a rotating shaft 3 which Ihave termed a cam shaft. The shaft 3 is provided with an endlessreversed spiral cam slot 5 cut therein and a pin (not shown) extendingdownwardly from the carriage 1 is arranged to slide therein to produce amotion or travel of the cariage 1 back and forth longitudinally of therotary shaft. 3.

The carriage 1 preferably includes a pair of air jets 7 and 9 which Iwill hereinafter term hot air jet 7 and cold air jet 9. Air from anexternal source (not shown) is directed to the air jets 7 and 9 througha tube 11. The airjet 7 is provided with a heating coil 13 which warmsthe air passing through the jet at all times. The air from the hot airjet 7 is projected outwardly through a nozzle 15 toward a cylinder 19carrying a recording medium 21 which is preferably of the charactersensitive to the application of heat so that it may be influenced by thehot air from jet 7 bearing the nozzle 15. The air in the jet 9 isdirected from a nozzle 17 in a direction which crosses the path of thehot air issuing from nozzle 15 and dissipates the same in accordancewith received signal impulses which control through electromagneticmeans (not shown) the cold air passing through the jet 9, as has beendisclosed by my copending application Serial No. 128,720, and also by mycopending application Serial No. 245,350, filed Jan. 9 1929.

The rotary cam shaft 3 and the cylinder 19 for carrying the recordingsurface 21 are supported at their ends in any desired manner by means ofend supports 23 and 25, and carried by the end support 25 in any desiredmanner in an appropriate form of gear train (not shown) for driving thecam shaft 3 at any predetermined and desirable speed from a motor (notshown). Directly beneath the cam shaft 3 is a long spindle 27, alsocarried at its ends by the supports 23 and 25, for guiding the carriage1 in its longitudinal 'motion on the cam shaft 3 by means of pins 29extending downwardly from the carriage 1 and arranged to ride on eitherside of the spindle 27. The pins 29 prevent the carriage from turning asthe shaft 3 is rotated and cause the carriage to assume the abovereferred to longitudinal motion back and forth in both left to right andright to left directions of the cam shaft 3.

Carried by the end supports 23 and 25 are upright support members 31 and33 which extend for a considerable distance above the carriage 1 andcylinder 19. These upright supports 31 and 33 are braced in any desiredmanner by suitable cross braces and angular braces attached as shown bythe drawings. At the upper ends of the uprights 31 and 33 is a roller 35over which the recording medium 21 is arranged to pass after beingadvanced, in a manner to be hereinafter described, from the recordingcylinder 19. For the purpose of tightly holding the recording surface onthe roller 35 a small clamping roller 37 is also provided and held bymeans of a clamp 39 tightly against the roller 35. Associated with thecylinder 19 and arranged similarly to the clamp roller 37 with respectto the roller 35 is a roller 41 arranged tightly against the cylinder 19and providing a tight drive for the paper or recording medium 21.

To now make reference to the means for advancing the recording surface21 with respect to the cylinder 19 at the end of each longitudinalmotion of the carriage 1 carrying the air jets 7 and 9 along the camshaft 3 I have provided a clutch mechanism, generally designated 43.

The clutch portion 43 is formed of two halves 45 and 47 which are forcedtogether by means of a spring 49 carried about a threaded spindle 51supported from the end support 23 of the frame. The tension of thespring 49 bearing against the clutch portion 47 is adjusted by means ofan adjustable nut 53 carried by the threaded spindle 51. The portion 45of the clutch, generally designated 43, has one or more pins 55 carriedon its periphery, for a purpose to be hereinafter set forth.

Also, formed as a part of the clutch portion 45 is a worm wheel 57 forthe purpose of driving a large pinion 59 which operates through anypreferred form of gear mechanism, generally designated 61, to turn thecylinder 19 at predetermined time intervals by a rotation of the worm57. The other end 63 of the worm 57 is formed similarly to the clutchportion 45 except that it has no pins extending from the peripherythereof. This portion 63 rests upon and rotates through frictionalengagement 3. large collar 65 which is carried securely on a spindle 67which ex-,

tends through the inside of the worm 57, the clutch portions 45 and 47,and the threaded spindle 51 and is securely fastened to the threadedspindle 51 in a collar or internally threaded nut 69. The spindle 67 isrotating at all times and derives its motion from a gear mechanism,generally designated 71, which is turned by any desired prime mover (notshown) and is, therefore, at all times rotating the threaded spindle 51and the clutch portion 47 rigidl fastened thereto by any preferred form0 clamping mechanism such as a set screw. It is thus seen that frommotion derived through the turning of the spindle 67 the clutch portion47 will tend to turn the portion 45 and thus rotate the worm 57 and itsassociated pinion 59 and gear mechanism 61 by means of a friction drivesuch as is derived from the pressure of the spring 59 upon the clutchportion 47 if no means is provided for preventing this frictional driveand, therefore, the recording surface or medium 21 would be advanced atall times through a rotation of the cylinder 19 forming a frictionaldrive with the clamping roller 41. I have, therefore, provided means forinterrupting this motion so that the motion of the recording surface maonly take place at eriods when the carnage 1 carrying the air ets 7 and9 has reached each end of its longitudinal motion with respect to thecam shaft 3 and this briefly includes a trip mechanism, generallydesignated 73, y

The trip mechanism includes a spindle 7 5 extending longitudinally ofthe rotary cam shaft 3 and the cylinder 19 and supported by the endsupports 23 and 25. About the spindle 75 a U-shaped pro ect1on onthecarriage 1 is arranged to slide freely. At either end of the spindle75 I have arranged and rigidly fixed collars 77 which, due to theengagement of the U-shaped projections, move the spindle 75 in onedirection or the other as the carriage 1 reaches one or the other end ofits longitudinal motion on the rotary cam shaft 3. The end of thespindle 73 is formed in a recessed or opposed V construction 79 and inthis portion a roller 81 carried by the trip mechanlsm 73 is adapted torest. As the spindle 75 is moved in one or the other dlrection theroller will be moved to the left (looking at Fig. 2) by reason'of thefact that 1t is starting at the center of the opposed V- shaped groovesin the spindle 75 an moved to ride on the spreading portion of the Vasthe spindle is moved in one or the other direction. The yoke 83 ispivotally mounted through the end support 23 and at its end toward thecylinder 19 a spring 85 is provided for holding the yoke 83 in aposition toward the spindle 75 so that the roller 81 which is carried bythe yoke 83 will be in engagement with the V portion of the said spindle75. Mounted on supports 87 and 89 on the yoke 83 are two extending pins91 and 93 upon which the pins 55 extending outwardly from the peripheryof the clutch portion are adapted to catch and thus prevent rotation ofthe clutch portion 45, even though the portion 47 is tending by thefrictional drive to rotate the same. As the spindle 75 moves in and outdue to a motion of the carriage 1 back and forth longitudinally of therotary cam shaft 3, the roller 87 will move the trip mechanism 73 to theleft against the action of the spring and the pin will be released fromthe extending pin 91 carried by the support 87 of the yoke 83 so as topermit the clutch portion 45 to rotate freely with the clutch portion 47until the pin 55 has turned sufficiently to come in contact with theextending pin 93 carried by the yoke 83, which in the case of only asingle pin on the clutch portion 45, will be a complete turn, and formore pins a proportionate amount, and then as the roller 81 again movesto the center of the V- shaped recess on the spindle the pin 55 willslip from the extending pin 93 and come against the pin 91. As themotion of the spindle 75 is repeated the pin will slip and again permitthe turn 47 of the clutch to drive the portion 45. It is readily seenthat, as this happens at each stroke of the carriage 1, the worm 57 willbe turned a certain amount and consequently the cylinder 19proportionatel rotated so as to advance the record:

ing sur ace 21 with respect thereto.

Also, driven from the gear mechanism 61 is an upright spindle 95 whichis at all times turning similarly to the spindle 67 extending throughthe clutch 43. This spindle 95 drives a shaft 97 through any appropriatetype of universal joint 99 and the shaft or spindle 97 extends upwardlyalong the upright support31 to the top portion thereof where a seconduniversal joint 101 drives a short spindle 103 to rotate a clutch 105 ina manner similar to that described in connection with the rotation ofclutch 43 except that no trip mechanism is provided for the clutch 105.The clutch 105 has a spring 107 tending to turn both parts of the sameand rotate through a worm and gear mechanism 109 the upper roller 35.However, when the recording surface 21 is held with respect to the clinder 19 by the action of the pins 55 on tlie clutch 43 the recordingsurface can not be moved with respect to the roller 35 and, therefore,the clutch 105 merely slips and can not pull the recording surfaceupward, but as soon as the pins 55 are released to permit a rotation ofthe cylinder 19 and its associated roller 41, the clutch 105 will turnthe roller 35 and move the paper 21 upward and at the same time keep thepaper tight with respect to the upright, so that as a picture formed bythe action of the air jets 7 and 9 on the recording surface, the lattermay be periodically advanced upwardly from the re cording cylinder 19towardthe top of the photoradioscope and enable an audience viewing thesame to continuously watch the progress of reproducing the picture asreceived by any appropriate type of radio or wire receiver actuating thesignal recorders in the form of the air jets 7 and 9. It is convenientto provide recording medium or heat sensitive paper on a roll and Ihave, therefore, provided on the end supports 23 and 25 of the recordingmachine, a rack or support spindle 111 to carry the recording paper.From the support spindle 111 the paper is led from the roll under thecylinder 19 and between it and the roller 41 and thence upwardly to bepassed between the roller 35 and its associated clamping roller 37.

In many cases it has been found desirable to provide a means forilluminating the picture as it is being developed, especially, in caseswhere the apparatus is displayed in store windows and can beconveniently used for advertising purposes at night and I have,therefore, provided on the sides of the upright portion of the framework 31 and 33 lights 113 mounted in front of reflectors 115 for thepurpose of directing light rays across the recording surface 21.

It is, therefore, clear that my invention provides a. means fordisplaying pictures which are produced according to the presentdisclosure in line by line formation by the action of a recording jetupon a sensitive recording medium and advancing the picture 5 as it isproduced in its line by line formation a predetermined distance atinterrupted intervals in accordance with the time for marking a singleline of the fiicture, the advance distance being equal to t ewidth ofone line of recordin which forms an excellent means for displaying thepicture as produced for the purpose of advertising, explaining theprocess to others, and demonstrating the utility of the recordingapparatus as well as for many other uses.

While I have confined my description as relating to the radio or wiretransmission and reproduction of pictures it is to be distinctlyunderstood that the term picture applies to the transmission andreproduction of manuscripts, finger prints, newspa r clippings or pages,blue prints, checks, 'agrams of all descriptions, as well as other formsof printed matter and such things as are adapted to make a visibleimpression on the eye and I, therefore, believe that my invention shouldonly be limited in its sec 6 so far as the limitations expressed througout the various appended claims necessitate.

Having described my invention I am entitled to all modifications such asfall fairly within its spirit and scope as defined by the followingclaims wherein;

I claim:

'1. A photoradioscope, including, a picture recording machine, a framework associated therewith, a recording surface carried by said framework and said recording machine,

means for producing marks on said record- 40 ing machine in accordancewith received signal impulses, means for periodically advancing therecording surface with respect to said marking means, and means forproviding an interrupted motion of said advancing means for saidrecording surface in accordance with the rate of reproduction of asingle line of a received picture irrespective of the direction of saidreproduction.

2. A photoradioscope for displaying pictures, which includes, a picturerecording machine and associated signal actuated recordin means, a framework carried by said recording machine, a roller on said frame work andsaid recording machine, a, recording surface carried by each of saidrollers, means for advancing said recording surface with respect to saidrollers and said signal actuated recording means, and means forproducing an interrupted motion to said advancing means for advancingthe recording surface a single step for each movement of the signalactuated recording means across the recording surface irrespective ofdirection of said movement.

3, A photoradioscope, including, a picture recording machine andassociated si nal actuated recordin means, a frame wor carried by saidmachine, a roller upon the said machine and the upper ortion of saidframe work, a recording sur ace carried by each of said rollers, meansfor moving said signal actuated recording mechanism back and forthtransversely of said recording surface, and means for interruptedlyadvancin the said recordin surface a predetermine amount at the en ofeach transverse motion of the si al actuated recordin irrespective ofthe direction 0 said movement.

4. A photoradioscope for displaying electricallg; transmitted picturesat a point remote cm a transmitter, which includes, a picture recordingmachine and associated signal responsive recording means, a frame worksupported by and extending above said machine, a substantially flatrecording surface for recordin pictures, said surface being carried bsaid machine and the upper portion of said frame work, and means foradvancing said recordin surface in step by step movements upwar y ofsaid recording machine to the upper portion of said frame work and awayrom said recording means, whereby the picture as received ma be producedso as to be at all times visib e during its re roduction.

5. he method of displaying pictures received from a distant point, whichcomprises, recordin impulses varying in intensities in accor ance withreceived signal strength, reducing a visible record from said signa s,displaying said visible record of the said marking impulses, andadvancing the said visible record periodically and interruptedl inaccordance with the rate of marking a single line of the receivedpicture irrespective of the direction of said marking.

6. A photoradiosco e for displaying transmitted pictures, w ichincludes, a picture recording machine and associated signal actuatedrecording means, a frame work carried by said machine, rollers on saidframe work and said machine, a recording surface carried by saidrollers, means for moving said signal actuated recording means bac andforth transversely of said recordin surface, means associated with oneof sai rollers tending to continuously advance said recording surface,and means associated with the other of said rollers on said machine forinterrupting the advance of said recording surface and permitting thesaid surface to be advanced a predetermined amount at the end of eachtransverse stroke of said recording means, whereby a new line of markingimpulses is roduced on said recording surface.

7. A p otoradioscope for displaying received pictures, which includes, apicture recording machine and an associated signal actuated picturerecording means, a picture mechanism displaying frame work supported bysaid machine, a set of rollers on said frame work and upon said machine,a recording surface carried by each of said sets of rollers, means formoving said signal actuated recording means back and forth transverselyof said recording surface, friction drive means associated with one ofsaid rollers tending to continuously advance the said recording surfacewith respect to said rollers, and means associated with the other ofsaid rollers on said machine for interrupting the advance of saidrecording surface during each transverse movement of said recordingsurface and permitting the said surface to be advanced a predeterminedamount at the end of each transverse stroke of said recording meansirrespective of the direction of sai stroke, whereby a new line ofmarking impulses is produced on said recording surface for eachlongitudinal movement of said recording means.

8. A photoradioscope for displaying electrically transmitted pictureswhich includes a signal actuated recording mechanism, a display meansfor the reproduced pictures associated with saidrecording mechanism, arecording surface carried by said display means and-subject to theinfluence'of said recording mechanism, and means for producing arelative motion between said recording mechanism and said recordingsurface for continually presenting portions of the recording surfaceuninfluenced by received signals to the action of said recordingmechanism for each change in the path thereof with respect to the saidsurface and irrespective of the direction thereof.

9. A photoradioscope including a picture recording machine andassociated signal actuated recording means, a frame work carried by saidmachine, a roller upon the said machine and the upper portion of saidframe work, a recording surface carried by each of said rollers, meansfor moving said signal actuated recording mechanism back and forthtransversely of said recording surface, and means for advancing the saidrecording surface by predetermined amounts for exposing uninfluencedsections of the surface to recording action upon each transversemovement of the signal actuated recording mechanism irrespective of thedirection of movement thereof.

10. A photoradioscope for displaying transmitted pictures which includesa picture recording machine and associated signal actuated recordingmeans, a frame work carried by said machine, rollers on said frame workand said machine, a recording surface carried by said rollers, means formoving said signal actuated recording means back and forth transverselyof said recording surface, means associated with one of said rollerstending to continuously advance said recording surface, and meansasrecording means.

RICHARD HOWLAND RANGER.

CERTIFICATE OF CORRECTION.

Patent No. 1,819,197. 'Granted August 18, 1931, to

RICHARD ROWLAND RANGER.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 4,line 61, claim 2, before the word "movement" insert-the word transverse:and that the said Letters Patentshould be read with this correctiontherein that the same may conform to the record of the case in thePatent Office.

Signed and sealed this 17th day of May, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patent

